Ink remover



Patented Feb. 2, 1926.

HERBERT W. BECKER, F MILWAUKEE, WISCONSIN.

INK REMOVER.

N0 Drawing.

To all whom it may concern Be it known that I, HERBERT W. BECKER, a citizen of the United States of America, and resident of Milwaukee, in the county of Milwaukee and tiitate of Wisconsin, have invented certain new and useful Improvements in Ink Removers, of which the following is a specification.

This invention relates to a composltion for the removal or eradication of ink, and the said invention is particularly for use in removing india ink from tracing cloth.

It is an object of this invention to produce an ink eradicator of the character indicated which will effectually remove ink without injuring the tracing cloth or without discoloring it, the said eradicator leaving the surface of the tracing cloth in a condition which will permit re-inking without liability of the ink spreading or being affected.

It is a further object of this invention to produce an ink remover which can be readily applied to the surface to be treated and which will act promptly and dry quickly.

it is a still further object of this invention to produce an ink eradicator of the character indicated which will not be affected by temperature conditions prevailing in the United States of America and which will not deteriorate with age if the container is kept air-tight.

lVith the foregoing and other objects in *iew, the invention consists in the ingredients herein set forth and claimed.

In carrying the invention into practice, formic acid; glycerine; sulphuric ether or chloroform; and an odorant or perfume are mixed together and preferably the ingredients are compounded in the proportion substantially as follows: Formic acid 21 parts, glycerine 3 parts, sulphuric ether or chloroform 1 part, bay oil part, and c0- logne part.

It has been found in practice that the ad- Application filed. May 13, 1925.

Serial No. 30,084.

dition of sulphuric ether or chloroform tends to expedite evaporation of moisture in the eradicator and hastens the drying of the surface of the tracing cloth, and'it may be referred to as an evaporating agent, whereas the bay oil, cologne or equivalent odorant renders the use of the compound more pleasant.

Preferably in producing the remover, the formic acid andglycerine are mixed by agitation such as stirring until the ingredients are thoroughly comminged. It has been found that if the mixture thus produced is heated to a temperature of approximately 100 1 1, Or subjected to slightly higher or slightly lower temperatures, the quality of effectiveness of the ink remover is slightly increased, although satisfactory results have been attained without subjecting the composition to heat. When, however, the process of heating is carried on, the liquid is permitted to cool and then the remaining ingredients are added.

Ilurthermore, in practice it has been found that formic acid of 85 per cent concentration or higher is best adapted for use in the composition, as increased moisture in the formic acid is likely to affect the starch of the tracing cloth and the finish or gloss of the cloth. 7

The proportions, of course, may be varied within predetermined bounds, but the proportions given have been found most suc cessful.

I claim:

1. An ink remover consisting of 21 parts formic acid; 8 parts glycerine; 1 part sulphuric ether; part bay oil and part cologne.

2. An ink remover consisting of formic acid 21 parts; glycerine 3 parts, and an evaporating agent in the form of an aliphatic organic solvent 1 part.

HERBERT W. BECKER. 

